Today marks an exhilarating beginning for stylish teen Manatsu Natsumi, who is relocating to the metropolis for the first time. Upon arrival, she is instantly captivated by the city's dazzling displays. Suddenly, her day turns extraordinary when she meets Laura—a living mermaid! Laura seeks the Precure, a squad of luminous heroes who might hold the key to saving Grand Ocean, her homeland. The responsibility soon lands on Manatsu; her steadfast resolve awakens her as one of the Precure: the brilliant Cure Summer. As fresh allies join, Manatsu must adjust to her whirlwind new routine while defending humanity"s spirit from sea‑borne foes! With each confrontation growing tougher, the girls learn what truly matters to them and cherish the bonds that unite them in every challenge together.
